Fix string util reference
Add 'readOnly' flag for checkcolumn
Add NX.assert() helper
add default message
@since 2.4
Merge pull request #738 from sonatype/nx-assert

Add NX.assert() helper
Use consistent file naming
update jslint hints
UIDLockResource was missing @Named, leaving tests using it getting 404s
Merge remote-tracking branch 'origin/master' into nexus-5472-proxy404